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WO2015162965A1 - Instrument médical, outil d'assistance d'insertion, et système médical - Google Patents

Instrument médical, outil d'assistance d'insertion, et système médical Download PDF

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Publication number
WO2015162965A1
WO2015162965A1 PCT/JP2015/052993 JP2015052993W WO2015162965A1 WO 2015162965 A1 WO2015162965 A1 WO 2015162965A1 JP 2015052993 W JP2015052993 W JP 2015052993W WO 2015162965 A1 WO2015162965 A1 WO 2015162965A1
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WO
WIPO (PCT)
Prior art keywords
power
coil
power receiving
power transmission
receiving coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2015/052993
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English (en)
Japanese (ja)
Inventor
亮 松井
勇太 杉山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Corp filed Critical Olympus Corp
Priority to CN201580019433.4A priority Critical patent/CN106163439B/zh
Priority to DE112015001337.7T priority patent/DE112015001337T5/de
Publication of WO2015162965A1 publication Critical patent/WO2015162965A1/fr
Priority to US15/299,632 priority patent/US10321901B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00002—Operational features of endoscopes
    • A61B1/00025—Operational features of endoscopes characterised by power management
    • A61B1/00027—Operational features of endoscopes characterised by power management characterised by power supply
    • A61B1/00029—Operational features of endoscopes characterised by power management characterised by power supply externally powered, e.g. wireless
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00112—Connection or coupling means
    • A61B1/00114—Electrical cables in or with an endoscope
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Instruments for taking body samples for diagnostic purposes; Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex determination or ovulation-period determination; Throat striking implements
    • A61B10/02—Instruments for taking cell samples or for biopsy
    • A61B10/06—Biopsy forceps, e.g. with cup-shaped jaws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B17/22012—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement
    • A61B17/2202—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement the ultrasound transducer being inside patient's body at the distal end of the catheter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/28—Surgical forceps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421—Cannulas
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3476—Powered trocars, e.g. electrosurgical cutting, lasers, powered knives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320069—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic for ablating tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/32007—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with suction or vacuum means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320082—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic for incising tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A61B2018/1286—Generators therefor having a specific transformer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/10—The network having a local or delimited stationary reach
    • H02J2310/20—The network being internal to a load
    • H02J2310/23—The load being a medical device, a medical implant, or a life supporting device

Definitions

  • the present invention relates to a medical instrument that wirelessly receives power, an insertion aid that transmits power to the medical instrument, and a medical system that includes the medical instrument and the insertion aid.
  • the trocar which is an insertion aid, is inserted into the abdominal cavity with the inner needle being punctured into the patient's body wall in a state of being integrally combined with the inner needle having a sharp puncture needle at the tip.
  • the trocar is placed on the body wall by removing the inner needle, and is used as a guide tube for a medical instrument that performs treatment within the abdominal cavity.
  • a cable may be connected to a medical instrument inserted into the subject's body through the insertion hole of the trocar to supply power necessary for the treatment. This cable reduces the operability when the surgeon operates.
  • Japanese Patent Application Laid-Open No. 11-128242 discloses a power receiving coil of a medical instrument that is inserted into a trocar and electromagnetically coupled to the power transmitting coil via an alternating magnetic field generated from the power transmitting coil of the trocar. It is disclosed to supply power wirelessly.
  • the electric field generated by the power transmission coil and the electric field generated by the power receiving coil that received the AC magnetic field may affect surrounding devices.
  • Embodiments of the present invention are intended to provide a medical instrument having a power receiving coil with a small leakage electric field, an insertion aid having a power transmission coil with a small leakage electric field, and a medical system including the medical instrument.
  • the medical device includes a power receiving unit including a power receiving circuit that is magnetically coupled to an alternating magnetic field to receive power, and a drive unit that is driven by the power received by the power receiving unit, and the power receiving unit
  • the unit includes a solenoid-shaped first power receiving coil, and the first power receiving coil and a solenoid-shaped second power receiving coil whose winding direction is opposite to each other.
  • the first power receiving coil and the second power receiving coil are: The length and the number of turns are the same and are arranged concentrically, so that the direction of the current flowing through the first power receiving coil and the direction of the current flowing through the second power receiving coil are opposite to each other.
  • the first power receiving coil and the second power receiving coil are electrically connected to the power receiving circuit.
  • An insertion assisting tool includes a power transmission unit that generates an alternating magnetic field to be applied to a medical instrument inserted into an insertion hole, and the power transmission unit includes a solenoid-shaped first power transmission coil and the first power transmission.
  • the first power transmission coil and the second power transmission coil are power supply units so that the direction of the current flowing through the first power transmission coil and the direction of the current flowing through the second power transmission coil are opposite to each other. Is electrically connected.
  • the medical system includes an insertion assisting tool having a power transmission unit that generates an alternating magnetic field, and when inserted into the insertion hole of the insertion assisting tool, the medical system magnetically couples with the alternating magnetic field to receive power.
  • a power receiving unit including a power receiving circuit, and the medical instrument having a drive unit that is driven by the power received by the power receiving unit.
  • the power receiving unit includes a solenoid-shaped first power receiving coil and the first power receiving A coil and a solenoid-shaped second power receiving coil having a winding direction opposite to each other, wherein the first power receiving coil and the second power receiving coil have the same length and the same number of turns, and are arranged concentrically.
  • the first power receiving coil and the second power receiving coil are arranged such that the direction of the current flowing through the first power receiving coil and the direction of the current flowing through the second power receiving coil are opposite to each other. Coil is electrically connected to the power receiving circuit.
  • a medical instrument having a power receiving coil with a small leakage electric field
  • an insertion aid having a power transmission coil with a small leakage electric field
  • a medical system including the medical instrument.
  • the treatment tool 30 that is the medical instrument of the first embodiment, the trocar 10 that is the insertion aid, and the medical system 1 will be described with reference to FIGS. 1 and 2.
  • the trocar 10 and the treatment tool 30 constitute the medical system 1 together with the power supply unit 20.
  • power is transmitted and received wirelessly via an alternating magnetic field.
  • the trocar 10 has a power transmission unit 16 that generates an alternating magnetic field
  • the treatment tool 30 is a power receiving unit 39 that wirelessly receives power via the alternating magnetic field, and a drive unit that is driven by the power received by the power receiving unit 39.
  • a certain treatment section 32 is a certain treatment section 32.
  • the treatment tool 30 has a power receiving coil 31 with a small leakage electric field.
  • the power receiving coil 31 of the power receiving unit 39 receives power by being magnetically coupled with an alternating magnetic field.
  • the power receiving coil 31 is composed of a left-handed first power receiving coil 31L and a right-handed second power receiving coil 31R.
  • the left-handed first receiving coil 31L is represented by a thin line
  • the right-handed second receiving coil 31R is represented by a thick line
  • the portion of the coil passing through the front side of the drawing is represented by a solid line
  • the portion of the coil passing through the back side of the drawing is represented by a dotted line.
  • the trocar 10 having the power transmission unit 16 will be described.
  • An elongated insertion tube 14 ⁇ / b> H extending from the lower part of the housing 14 of the trocar 10 is inserted into the subject 9. That is, the trocar 10 includes an insertion tube 14H that is a distal end portion that is punctured by a subject, and a housing 14 that is an extending portion disposed on the proximal end side of the distal end portion.
  • the housing 14 has an insertion hole 10H for inserting the treatment tool 30 into the body of the subject 9 at the center.
  • the insertion hole 10H is a through hole that extends to the tip of the insertion tube 14H.
  • the power transmission unit 16 of the trocar 10 When the AC power is supplied from the power supply unit 20 by the operator operating the switch 23, the power transmission unit 16 of the trocar 10 generates an AC magnetic field.
  • the power supply unit 20 that outputs AC power to the power transmission unit 16 of the trocar 10 includes a power supply 21 and a power transmission circuit 22.
  • the power source 21 outputs a large amount of high-frequency power of 10 W to 100 W, for example.
  • the power transmission unit 16 includes a solenoid-shaped power transmission coil 11 and a power transmission capacitor 15 wound around the outer periphery of the insertion hole 10 ⁇ / b> H.
  • the length of the power transmission coil 11 is, for example, 10 mm to 50 mm.
  • the power transmission coil 11 of the power transmission unit 16 and the power transmission capacitor 15 are connected in series to constitute a power transmission side LC series resonance circuit that generates an AC magnetic field having a predetermined resonance frequency FR1.
  • the power source 21 outputs AC power having a resonance frequency FR1.
  • the stray capacitance of the power transmission coil 11 may be used instead of the power transmission capacitor 15.
  • the power transmission circuit 22 includes an impedance matching circuit (not shown) that performs impedance matching between the power source 21 and the resonance circuit.
  • the power transmission capacitor 15 is disposed in the trocar 10 and the power transmission circuit 22 is disposed in the power supply unit 20, but the power transmission capacitor 15 and the power transmission circuit 22 are disposed in the trocar 10.
  • the power supply unit 20 may be provided.
  • the insertion portion of the treatment tool 30 is inserted into the abdominal cavity 9A inside the subject through the insertion hole 10H of the trocar 10.
  • an endoscope or the like is also inserted into the abdominal cavity 9A of the subject 9 via another trocar, but the description thereof is omitted.
  • the treatment tool 30 is a high-frequency treatment tool that performs treatment such as incision and coagulation by applying high-frequency power to a treatment target portion 9B such as a blood vessel held between treatment portions 32, for example.
  • the treatment tool 30 wirelessly receives power from the power transmission unit 16 of the trocar 10.
  • the treatment tool 30 has good operability because a cable for supplying power is not connected.
  • the treatment instrument 30 includes a power reception unit 39, a power reception circuit 34, a drive circuit 35, and a treatment unit 32 that is a drive unit.
  • the power reception unit 39 includes a power reception coil 31 that is inductively coupled to the power transmission coil 11 of the power transmission unit 16 of the trocar 10 and wirelessly receives power via an alternating magnetic field.
  • the power receiving coil 31 is a solenoid-shaped coil disposed in the insertion portion of the treatment instrument 30 along the long axis direction, and the central axis thereof substantially coincides with the central axis of the insertion portion.
  • the power receiving coil 31 has a length of, for example, 100 mm or more and 200 mm or less and is disposed over the entire length of the insertion portion so that a part of the power receiving coil 31 is always inserted into the power transmission coil 11 during the treatment. It may be. That is, the length of the power receiving coil 31 is preferably longer than the length of the power transmitting coil 11. Thereby, even if the treatment tool 30 moves back and forth within the insertion hole 10H during the treatment, the power receiving coil 31 can always receive power.
  • the outer peripheral part of the receiving coil 31 is covered with insulating resin, for example.
  • a power receiving capacitor 33 is connected in series to the power receiving coil 31 to configure a power receiving side LC series resonant circuit that efficiently receives an AC magnetic field having a predetermined resonance frequency FR2.
  • the resonance frequency FR2 of the power reception side LC series resonance circuit is substantially the same as the resonance frequency FR1 of the power transmission side LC series resonance circuit.
  • wireless power transmission / reception is efficiently performed by the magnetic field resonance phenomenon.
  • the resonance frequencies FR1 and FR2 can be selected as appropriate within a range of 100 kHz to 20 MHz, for example, but a frequency permitted to be used by law, such as 13.56 MHz, is preferably selected.
  • the power receiving circuit 34 rectifies the AC signal received by the power receiving coil 31, converts it to a DC signal, smoothes it, and adjusts it to a voltage supplied to the drive circuit 35 by a DC / DC converter.
  • the power receiving circuit 34 includes an impedance matching circuit (not shown) for performing impedance matching between the drive circuit 35 and the resonance circuit.
  • the drive circuit 35 converts the power from the power receiving circuit 34 into power suitable for driving the treatment unit 32 and outputs the power. For example, a drive signal having a frequency of 350 kHz and a voltage of 100 Vpp used for treatment such as incision and coagulation is supplied from the drive circuit 35 to the treatment unit 32 of the high-frequency treatment instrument.
  • the receiving coil 31 consists of the 1st receiving coil 31L and the 2nd receiving coil 31R.
  • Each figure is a schematic diagram for explanation, and the number of turns and the length of the coil are different from those of an actual coil.
  • the second power receiving coil 31R of the power receiving coil 31 has the same solenoid shape as the first power receiving coil 31L, but the winding direction is opposite.
  • the first power receiving coil 31L is counterclockwise, while the second power receiving coil 31R is clockwise.
  • the diameter of the second power receiving coil 31R is slightly larger than the diameter of the first power receiving coil 31L, and is arranged concentrically outside the first power receiving coil 31L. Further, the two coils are electrically connected to the power receiving circuit 34 via the power receiving capacitor 33 so that the directions of the currents flowing through the coils are opposite to each other.
  • the direction of the coil current means whether the current exits from or enters the coil at the terminal at the upper end of the coil.
  • the two coils are electrically connected in parallel.
  • the second power receiving coil 31R generates an AC magnetic field in the same direction in the same space as the AC magnetic field generated by the first power receiving coil 31L whose winding direction is opposite to that of the first power receiving coil 31L.
  • the direction of the coil current flowing through the power receiving coil 31 is a direction in which the magnetic flux generated in the power receiving coil 31 by the coil current prevents the change of the magnetic flux interlinked with the power receiving coil 31.
  • the change in the interlinkage magnetic flux of the power receiving coil 31 due to the alternating magnetic field generated by the power transmitting coil 11 at a certain time is a direction that increases upward in the power receiving coil axial direction of FIG. 3, the downward magnetic flux is generated.
  • the winding directions of the power receiving coil 31R and the power receiving coil 31L are opposite to each other, the directions of the currents flowing through the two coils are always in opposite directions (reverse phase). Accordingly, counter electromotive forces in the opposite directions are generated in the two coils due to the coil current, and the potentials generated in the two coils are in the opposite directions.
  • the first power receiving coil 31L and the second power receiving coil 31R are substantially the same so that the electric field E1 generated by the first power receiving coil 31L and the electric field E2 generated by the second power receiving coil 31R cancel each other. Any configuration may be used.
  • the length and the number of turns of the second power receiving coil 31R may be ⁇ 10% different from the length and the number of turns of the first power receiving coil 31L.
  • a method of covering the periphery of the apparatus with an electromagnetic shield made of a conductor such as metal is used.
  • the entire treatment instrument or a receiving coil that is a source of the leakage electric field is used. If the surroundings are covered with an electromagnetic shield, the magnetic coupling between the AC magnetic field generated by the power transmission coil of the trocar and the power receiving coil of the treatment tool will be blocked, and the efficiency of power transmission will be significantly reduced. is there.
  • the leakage electric field can be reduced without providing an electromagnetic shield that blocks the magnetic coupling between the power transmission coil and the power reception coil, it is difficult to provide an electromagnetic shield around the power reception coil.
  • An unnecessary leakage electric field can be reduced even in a medical instrument such as an endoscope. That is, the treatment instrument 30 is minimally invasive because it is not necessary to provide an electric field shield, and the insertion portion to be inserted into the subject 9 has a small diameter.
  • various bipolar treatment instruments having a treatment section that operates by the power received by the power reception unit 39 can be used.
  • an electric knife, a high-frequency incision forceps, a high-frequency hemostatic forceps, a hot biopsy forceps, a high-frequency coagulation treatment tool, and the like can be used as the treatment tool 30.
  • the treatment instrument 30 is not limited to a treatment instrument that performs treatment by applying high-frequency power to the treatment portion 9B, and may be various types of electrically driven treatment instruments.
  • an ultrasonic treatment tool that cuts and coagulates living tissue using ultrasonic vibration
  • an ultrasonic suction treatment tool that crushes and sucks biological tissue using ultrasonic vibration
  • a rotational force of a drill etc.
  • An excision treatment tool that pulverizes a living tissue by using the above, a treatment tool with an actuator having a function of moving the forceps tip electrically, or the like may be used.
  • the medical instrument inserted into the insertion hole 10H of the trocar 10 is not limited to a so-called treatment instrument, and various medical instruments having an electric drive unit driven by electric power, for example, an electric drive unit, A rigid endoscope having an imaging device such as a CCD and an illumination device such as an LED can also be preferably used as the medical instrument of the medical system of the present invention.
  • the first power receiving coil 31LA and the second power receiving coil 31RA are electrically connected in series.
  • the power receiving coil is disposed at the insertion portion of the treatment instrument, and the resonance capacitor and the power reception circuit electrically connected to the power reception coil are disposed at the proximal end side of the treatment instrument insertion portion.
  • the treatment tool 30A in which the first power reception coil 31LA and the second power reception coil 31RA are connected in series has two coils compared to the treatment tool 30 in which the first power reception coil 31LA and the second power reception coil 31RA are connected in parallel.
  • the wiring for connecting the terminal on the distal end side of the insertion portion of the first power receiving coil 31L and the resonance capacitor on the proximal end side of the insertion portion, which was necessary in parallel connection and the second power receiving coil
  • the terminal on the distal end side of the insertion portion of 31R and the wiring for connecting the power receiving circuit on the proximal end side of the insertion portion are unnecessary. Since the number of wires passing through the insertion portion of the treatment tool is small, it is easy to reduce the diameter.
  • the treatment tool 30 of the medical system 1A has the same configuration as the treatment tool 30 of the medical system 1, and the medical system 1A is similar to the medical system 1 and the like, so the same components are denoted by the same reference numerals and description thereof is omitted. .
  • the power transmission coil 11 ⁇ / b> A of the power transmission unit 16 ⁇ / b> A of the trocar 10 ⁇ / b> A which is an insertion aid, is reversely wound with the first power transmission coil 11 ⁇ / b> L and the first power transmission coil 11 ⁇ / b> L connected in parallel. It consists of the second power transmission coil 11R.
  • the power transmission coil 11A has a solenoid-shaped first power transmission coil 11L and a solenoid-shaped second power transmission coil 11R having the same length and the same number of turns as the first power transmission coil 11L, but the winding direction is opposite. And consist of The first power transmission coil 11L and the second power transmission coil 11R having a slightly larger diameter than the first power transmission coil 11R are concentrically arranged at substantially the same position on the outer periphery of the insertion hole 10H of the trocar 10. Further, the two coils are electrically connected in parallel, and are electrically connected to the power supply unit 20 via the power transmission resonance capacitor 15 so that the directions of currents flowing in the coils are opposite to each other.
  • first power transmission coil 11L and the second power transmission coil 11R may be electrically connected in series.
  • the two AC magnetic fields are added and applied to the treatment instrument 30.
  • the electric field generated by the first power transmission coil 11L and the electric field generated by the first power transmission coil 11R are in opposite directions, the two electric fields cancel each other. That is, only an unnecessary leakage electric field around the power transmission coil is reduced without reducing an AC magnetic field generated in the power transmission coil in order to perform wireless power transmission from the power transmission unit to the power reception unit. For this reason, the trocar 10A has a small leakage electric field leaking to the surroundings.
  • the medical system 1A including both the trocar 10A and the treatment tool 30 having a small leakage electric field can reduce the leakage electric field more than the medical system 1.

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Abstract

L'invention concerne un outil de traitement (30) qui a une unité de réception d'énergie électrique (39) et une partie de traitement (32) entraînée par l'énergie électrique reçue par l'unité de réception d'énergie électrique (39), l'unité de réception d'énergie électrique (39) comprend une première bobine de réception d'énergie électrique en forme de solénoïde (31L) et une seconde bobine de réception d'énergie électrique en forme de solénoïde (31R) enroulée dans la direction opposée à la direction d'enroulement de la première bobine de réception d'énergie électrique (31L), la première bobine de réception d'énergie électrique (31L) et la seconde bobine de réception d'énergie électrique (31R) ont la même longueur et le même nombre d'enroulements et sont disposées de façon concentrique, et la première bobine de réception d'énergie électrique (31L) et la seconde bobine de réception d'énergie électrique (31R) sont reliées électriquement à la partie de traitement (32) de telle sorte que la direction du courant électrique circulant vers la première bobine de réception d'énergie électrique (31L) et la direction du courant électrique circulant vers la seconde bobine de réception d'énergie électrique (31R) sont mutuellement opposées.
PCT/JP2015/052993 2014-04-21 2015-02-03 Instrument médical, outil d'assistance d'insertion, et système médical Ceased WO2015162965A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201580019433.4A CN106163439B (zh) 2014-04-21 2015-02-03 医疗器具、插入辅助器具以及医疗系统
DE112015001337.7T DE112015001337T5 (de) 2014-04-21 2015-02-03 Medizinisches Instrument, Einführungshilfswerkzeug und medizinisches System
US15/299,632 US10321901B2 (en) 2014-04-21 2016-10-21 Medical instrument that wirelessly receives power, insertion assisting tool that wirelessly transmits power and medical system

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JP2014-087564 2014-04-21
JP2014087564A JP6329422B2 (ja) 2014-04-21 2014-04-21 医療器具、挿入補助具、および医療システム

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JP2015205051A (ja) 2015-11-19
US20170035402A1 (en) 2017-02-09
CN106163439B (zh) 2018-12-11
JP6329422B2 (ja) 2018-05-23
US10321901B2 (en) 2019-06-18
CN106163439A (zh) 2016-11-23

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